Red catches people's attention, and is often used either in a negative way to indicate danger and emergency, or in a positive way in advertising to gain more viewers, or in nature, as a ripe fruit announces its readiness with its red color.[29] Several studies have indicated that red carries the strongest reaction of all the colors, with the level of reaction decreasing gradually with orange, yellow, and white, respectively.[30] Because of this, scientists have repeatedly recommended red for warning signals, labels, and signs. Because of these recommendations, red has seen widespread use as a danger signal, in stop signs, to warn people of extreme heat or flammability, and even to signal warnings in sports such as soccer (see: penalty card).
in stadistics, as polls and graphics it's used to make the user believe such item or person it's dangerous.
the color for the playstion brand its not red
the only time red was used ps3 in the american playstation site, PSP is yellow, Ps2 is blue. it's purple for europe
but now they are using for the PS3 Blue.